Over torqued! The bails tend to lift and push-out and that effect gets amplified when over tightened. That being said, that is the weak point of that binding. I have the LTD version of that binding for four years now and they are still good. If you like this type of bindings try F2. The F2’s stud goes through the heel piece, better design. Or, go all metal, TD2, OS2 & PH1.
Although, you could still resurrect your bindings, just look at the F2. Or, if you do not want to tinker with it, send it my way. :D
Regards,
Cristan